About Arizona State Income Tax

Arizona implemented a flat tax rate of 2.5% in 2026, replacing its previous progressive tax system. This makes Arizona one of the lowest-tax states in the nation and extremely competitive for attracting residents and businesses.

Arizona Tax Features

• Flat Tax Rate: Just 2.5% on all income - one of the lowest in the US
• Simple System: Easy to calculate with a flat rate
• Recent Change: Switched from progressive to flat tax in 2026
• Competitive: Lower than all neighboring states except Nevada (0%)

How Arizona Tax is Calculated

Arizona's flat tax system is extremely simple:

1. Determine your total taxable income
2. Apply standard deduction if applicable
3. Multiply by 2.5% to get your Arizona state tax
4. Add federal tax based on your bracket

Frequently Asked Questions

What is Arizona's income tax rate?

Arizona has a flat income tax rate of 2.5% as of 2026. This is one of the lowest state income tax rates in the United States, making Arizona very tax-friendly.

Did Arizona recently change its tax system?

Yes! Arizona switched from a progressive tax system (with rates up to 4.5%) to a flat 2.5% rate in 2026. This was a major tax cut for most Arizona residents.

Does Arizona tax retirement income?

Yes, but at the low 2.5% flat rate. However, Arizona does not tax Social Security benefits, and military retirement pay may be partially or fully exempt.

How does Arizona compare to neighboring states?

Arizona (2.5%) is lower than California (13.3% top rate), New Mexico (5.9%), Utah (4.65%), and Colorado (4.4%). Only Nevada has no income tax.

Arizona vs. Neighboring States

Tax comparison with surrounding states:

• Nevada: No state income tax (0%)
• California: Progressive up to 13.3%
• Utah: 4.65% flat rate
• Colorado: 4.4% flat rate
• New Mexico: Progressive up to 5.9%

Why Arizona's Low Tax Rate Matters

Arizona's 2.5% rate provides significant savings:

• $50,000 income: Only $1,250 in state tax
• $100,000 income: Only $2,500 in state tax
• $200,000 income: Only $5,000 in state tax

Compare this to California where a $200,000 earner would pay around $15,000+ in state income tax!

Tips for Arizona Taxpayers

• Enjoy the simplicity of Arizona's flat 2.5% rate
• Take advantage of low taxes compared to other western states
• Social Security is not taxed - great for retirees
• Consider Arizona's overall tax burden (income + sales + property)
• Remote workers: Arizona is increasingly attractive vs. high-tax states